Television with subtitles
For many people, subtitles on television are not just a nice option, but an absolute necessity. For the deaf and hard of hearing in particular, watching TV without subtitles can be compared to trying to read a book without letters or pictures - simply impossible.
How do subtitles work?
When watching a TV program with subtitles, you've probably asked yourself: "How do those lines at the bottom of the screen appear in sync with the spoken word?" The system behind subtitles is a combination of technology and human work.
Speech recognition software:
Transfer of subtitles
Once the subtitles have been created, they have to be transmitted to the viewers. This is where various technologies come into play:
DVB (Digital Video Broadcasting) & HbbTV (Hybrid Broadcast Broadband TV):